Amphibians and Reptilia
Compared to the amphibians provide an example of evolutionary novelty which is present in beings of the class Reptilia which prevents the loss of water through the skin?
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Reptile skin is keratinized and impermeable to the water whereas skin of amphibian is permeable. This impermeability of the skin made impossible the cutaneous gas exchange which is performed by the amphibians and respiration became dependent on the internal organs such as lungs and airways.
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This type of communication may, at the first thought, appear to be identical with oral communication. However, it is possible to visualize certain situation on which the two get distinguished. Telephonic conversation is oral but we cannot call it face-to dace communication. the presidents of two
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